Refrigerating attachment for milk-cans.



N0.841,5e7. PATBNTED JAN'.'15,1907.'

H.S.PARKEB REFRIGERATTNG ATTACHMENT FOR MLK GNS. APPLICATION FILED sEPT.s,19o6.

@rgida/fark??? UNITED STATES PATENT @TCE REFRIGERATING ATTACHMENT FOR MILK-CANS.

Specification of Letters Patent.

l'atented Jan. 15, 1907.

Application filed September 8, 1906. Serial No. 333,788.

To a/ZZ whom, it may concern:

cover of the can. Fig. 2 is a detail view of Be it known that I, HARRY S. PARKER, a the improved attachment.

citizen of the United States, residing at Trenton, in the county of Mercer and State of New Jersey, have invented new and useful Improvements in Refrigerating Attachments for Milk-Cans, of which the following is a specification. i g

This invention relat'es to improvements in cooling or refrigerating attachments for milkcans and other shipping vessels.

The invention consists in the construction and arrangement of the several parts, which will be more fully hereinafter set forth.

The usual form of shipping` or milk can is employed with the attachment without requiring the least modification in the structure of the neck `and mouth of the can, and the usual cover or closure'for cans of this class is utilized as a covering means for the attachment, the latter consisting Aof an inverted truncated body which is snugly and frictionally-iitted in the neck of the can and is provided at its upper extremity with opposed ears or projections to facilitate the application and withdrawalthereof with respect to the neck of the milk-can. Vithin the refrigerating attachment and held closely against the inner surface thereof are air-circulating pipes or tubes kwhich open through the bottom of the attachment and extend partially upward into the body of the attachment or far enough to permit the intro duction of a considerable quantity of refrigerating medium without liability of overiiow and passage of such medium downwardly into the milk. Furthermore,l the upper open extremity of the attachment is of the same diameter as the upper extremity of the neck of the can, so that one cover or closure may be used with either the can-neck or refrigerating attachment.

The primary object of the invention is to provide a cooling or refrigerating attachment that may be applied to any milk or shipping can now in use at a minimum expense and be tightly closed by the ordinary milk or shipping can cover, the refrigerating attachment when withdrawn from the milk or shipping can permitting the latter to be used as in ordinary service and closed by the same lid or cover.

In the drawings, Figure 1 is a vertical section of the upper portion of the milk or shipping can, showing the attachment in position in the mouth thereof and closed by the lid or lSimilar vcharacters of reference are employed to indicate corresponding parts in the views.

The numeral 1 designates the can, having a body 2, breast 3, neck 4, and mouth 5, into which is tightly fitted the improved cooling or refrigerating attachment 6. rlhe neck 4 of the can is vertically straight or is of the same diameter throughout its extent. The cooling or refrigeratingattachment 6 has a body of elongated inverted truncated conical form provided at its upperedge with a bead `7, preferably containing a stiifeningwire'S and exteriorly-applied projecting ears 9, attached immediately below the bead 7 at diametrically opposite points to facilitate the application and withdrawal of the attachment with respectto the neck 4 of the can. The refri'gerating attachment is constructed from suitable sheet metal and has a closed bottom 10 and an upper open extremity 11, having the same inside diameter as the upper extremity of the neck 4 of the can. Projecting upwardly into the interior of the attachment and secured against the inner surface of the side wall thereof are pipes 12 and 13, which open through the bottom 10, but terminate flush with the latter. The pipes 12 and 13 extend up far enough into the refrigerating attachment to permit the introduction of a considerable amount of refrigerating medium within the attachment without liability of overiiow of the said medium through the pipes into the can-body. The pipe 12 is of larger diameter than the pipe 13 to reduce as much as possible the obstruction to escape of the heated currents or heated air above the milk in the can into the refrigerating attachment, the cold air passing downwardly into the can through the smaller pipe 13.

The refrigerating medium used will be preferably ice which is broken and disposed in the attachment, and the latter is then inserted in the neck of the can and tightly closed by the lid or cover 14. The cold air from the refrigerating attachment passes down through the pipe 13 to the milk, and the warm air rises from the latter upwardly through the pipe 12, said warm air taking this course by reason of the fact that the pipe 12 offers the least resistance to the escape of such warm air, and from the pipe 12 the warm air passes into the refrigerating at- IOO IIO

tachment and is cooled and then iows downwardly through the pipe 13 to the milk, and thus a thorough circulation is maintained. As hereinbefore indicated, the upper ends of the pipes 12 and 13 terminate below the upper end of the refrigerating attachment, so as to avoid obstruction to the introduction of the lid or cover 14 into such attachment.

The main advantage of the improved refrigerating attachment is that it can be applied to milk-cans now in use, in view of the fact that all milk-cans of a given capacity now in general use have mouths of uniform diameter, and the body of the attachment being made to conform to necks of various sizes can, by reason of its tapering shape, be adjusted to a can having a mouth of regulation diameter without requiring any special preparation of the can to receive the attachment. Furthermore, the attachment can be applied to can-necks which may have been in use for some time and may have become dented with eliiciency in operation. The facility with which the attachment can be applied is of course due to the tapering shape of the body of the same toward the lower reduced extremity or bottom thereof. It is also possible to fit the attachment into a can having a corrugated neck or that class of cans provided with splash-wires. The improved attachment is inexpensive, and the cost of manufacture is materially reduced by using a single lid or cover as a closure for both the attachment and the canneck.

Having thus fully described the invention, what is claimed as new is- 1. The combination with a shipping-can, of a refrigerating attachment consisting of a body tapering toward its lower reduced eX- tremity and adapted to be frictionally wedged in the can-neck and readily removable from the latter, the attachment having opposite interior located pipes opening through the bottom thereof and terminating below the upper extremity of the same, and a single cover for closing the upper end of the attachment or the can-neck.

2. The combination with a shipping-can having a straight neck, of a refrigerating attachment consisting of a body tapering toward its lower reduced extremity and adapted to be removably wedged in the said canneck, the interior of the attachment having oppositelydisposed pipes thereinopening through the bottom of the same, the one pipe being larger in diameter than the other, and a single cover for closing the upper end of the attachment or the can-neck.

3. The combination with a shipping-can, of a refrigerating attachment adapted to be removably disposed in the can-neck, the attachment having interiorly-disposed pipes opening through the' bottom thereof and communicating with the interior of the same, the one pipe being greater in diameter than the other7 and a single cover for closing the upper end of the attachment or the can-neck.

4. The combination with a shipping-can, of a refrigerating attachment adapted to be removably disposed in the can-neck, and pipes disposed at opposite points in the interior of the attachment and opening through the bottom of the latter, the one pipe being greater in diameter than the other.

5. The combination With a shipping-can, of a refrigerating attachment adapted to be removably disposed in the can-neck, and pipes interiorly disposed in the attachment at diametrically opposite points and opening through the bottom of the same, the pipes communicating with the interior of the attachment, and a closing means removably applied to the attachment.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

HARRY S. PARKER.

Witnesses:

ALFRED L. PARKER, MANFRED NAAR. 

